3 papers
astro-ph.CO2026
The ESPRESSO Redshift Drift Experiment III -- The Third Epoch of QSO J052915.80-435152.0
Andrea Trost, Catarina M. J. Marques, S. Cristiani +25
The Sandage-Loeb test probes cosmic expansion directly by measuring the redshift drift in quasar absorption features in a model-independent way. In this series of papers, we have l…
astro-ph.CO2026
Beyond CDM: fundamental constants as cosmological observables
Dinko Milaković, John K. Webb
Recent cosmological tensions pose difficulties for CDM. Forthcoming facilities will be able to check whether these tensions result from systematic effects or indeed with the …
astro-ph.CO2026
One H2 molecule per ten million H-atoms reveals sub-pc scale cold overdensities at z~4
P. Noterdaeme, S. Balashev, T. Berg +11
We present the detection and analysis of H2 absorption at z = 4.24 towards the bright quasar J0007-5705, observed with the Very Large Telescope as part of the ESPRESSO QUasar Absor…